content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
   * Other names may be trademarks of their respective owners.]
   *
   * ---------------------
   * WindItemRenderer.java
   * ---------------------
   * (C) Copyright 2001-2012, by Achilleus Mantzios and Contributors.
   *
   * Original Author:  Achilleus Mantzios;
   * Contributor(s):   David Gilbert (for Object Refinery Limited);
   *
   * Changes
   * -------
   * 06-Feb-2002 : Version 1, based on code contributed by Achilleus
   *               Mantzios (DG);
   * 28-Mar-2002 : Added a property change listener mechanism so that renderers
   *               no longer need to be immutable.  Changed StrictMath --> Math
   *               to retain JDK1.2 compatibility (DG);
   * 09-Apr-2002 : Changed return type of the drawItem method to void, reflecting
   *               the change in the XYItemRenderer method (DG);
   * 01-Oct-2002 : Fixed errors reported by Checkstyle (DG);
   * 21-Jan-2003 : Added new constructor (DG);
   * 25-Mar-2003 : Implemented Serializable (DG);
   * 01-May-2003 : Modified drawItem() method signature (DG);
   * 20-Aug-2003 : Implemented Cloneable and PublicCloneable (DG);
   * 16-Sep-2003 : Changed ChartRenderingInfo --> PlotRenderingInfo (DG);
   * 25-Feb-2004 : Replaced CrosshairInfo with CrosshairState (DG);
   * 15-Jul-2004 : Switched getX() with getXValue() and getY() with
   *               getYValue() (DG);
   * ------------- JFREECHART 1.0.x ---------------------------------------------
   * 02-Feb-2007 : Removed author tags from all over JFreeChart sources (DG);
   * 17-Jun-2012 : Removed JCommon dependencies (DG);
   *
   */
  
  package org.jfree.chart.renderer.xy;
  
  import java.awt.Color;
  import java.awt.Font;
  import java.awt.Graphics2D;
  import java.awt.Paint;
  import java.awt.Stroke;
  import java.awt.geom.Line2D;
  import java.awt.geom.Rectangle2D;
  import java.io.Serializable;
  
  import org.jfree.chart.axis.ValueAxis;
  import org.jfree.chart.ui.RectangleEdge;
  import org.jfree.chart.util.PublicCloneable;
  import org.jfree.chart.plot.CrosshairState;
  import org.jfree.chart.plot.PlotRenderingInfo;
  import org.jfree.chart.plot.XYPlot;
  import org.jfree.data.xy.WindDataset;
  import org.jfree.data.xy.XYDataset;
  
  /**
   * A specialised renderer for displaying wind intensity/direction data.
   * The example shown here is generated by the <code>WindChartDemo1.java</code>
   * program included in the JFreeChart demo collection:
   * <br><br>
   * <img src="../../../../../images/WindItemRendererSample.png"
   * alt="WindItemRendererSample.png" />
   */
  public class WindItemRenderer extends AbstractXYItemRenderer
          implements XYItemRenderer, Cloneable, PublicCloneable, Serializable {
  
      /** For serialization. */
      private static final long serialVersionUID = 8078914101916976844L;
  
      /**
       * Creates a new renderer.
       */
      public WindItemRenderer() {
          super();
      }
  
      /**
       * Draws the visual representation of a single data item.
       *
       * @param g2  the graphics device.
       * @param state  the renderer state.
       * @param plotArea  the area within which the plot is being drawn.
       * @param info  optional information collection.
       * @param plot  the plot (can be used to obtain standard color
       *              information etc).
       * @param domainAxis  the horizontal axis.
       * @param rangeAxis  the vertical axis.
       * @param dataset  the dataset.
       * @param series  the series index (zero-based).
       * @param item  the item index (zero-based).
       * @param crosshairState  crosshair information for the plot
       *                        (<code>null</code> permitted).
       * @param pass  the pass index.
       */
      @Override
      public void drawItem(Graphics2D g2,
                           XYItemRendererState state,
                           Rectangle2D plotArea,
                           PlotRenderingInfo info,
                           XYPlot plot,
                           ValueAxis domainAxis,
                           ValueAxis rangeAxis,
                           XYDataset dataset,
                           int series,
                           int item,
                           CrosshairState crosshairState,
                           int pass) {
  
          WindDataset windData = (WindDataset) dataset;
  
          Paint seriesPaint = getItemPaint(series, item);
          Stroke seriesStroke = getItemStroke(series, item);
          g2.setPaint(seriesPaint);
          g2.setStroke(seriesStroke);
  
          // get the data point...
  
          Number x = windData.getX(series, item);
          Number windDir = windData.getWindDirection(series, item);
          Number wforce = windData.getWindForce(series, item);
          double windForce = wforce.doubleValue();
  
          double wdirt = Math.toRadians(windDir.doubleValue() * (-30.0) - 90.0);
  
          double ax1, ax2, ay1, ay2, rax2, ray2;
  
          RectangleEdge domainAxisLocation = plot.getDomainAxisEdge();
          RectangleEdge rangeAxisLocation = plot.getRangeAxisEdge();
          ax1 = domainAxis.valueToJava2D(x.doubleValue(), plotArea,
                  domainAxisLocation);
          ay1 = rangeAxis.valueToJava2D(0.0, plotArea, rangeAxisLocation);
  
          rax2 = x.doubleValue() + (windForce * Math.cos(wdirt) * 8000000.0);
          ray2 = windForce * Math.sin(wdirt);
  
          ax2 = domainAxis.valueToJava2D(rax2, plotArea, domainAxisLocation);
          ay2 = rangeAxis.valueToJava2D(ray2, plotArea, rangeAxisLocation);
  
          int diri = windDir.intValue();
          int forcei = wforce.intValue();
          String dirforce = diri + "-" + forcei;
          Line2D line = new Line2D.Double(ax1, ay1, ax2, ay2);
  
          g2.draw(line);
          g2.setPaint(Color.BLUE);
          g2.setFont(new Font("Dialog", 1, 9));
  
          g2.drawString(dirforce, (float) ax1, (float) ay1);
  
          g2.setPaint(seriesPaint);
          g2.setStroke(seriesStroke);
  
          double alx2, aly2, arx2, ary2;
          double ralx2, raly2, rarx2, rary2;
  
          double aldir = Math.toRadians(windDir.doubleValue()
                  * (-30.0) - 90.0 - 5.0);
          ralx2 = wforce.doubleValue() * Math.cos(aldir) * 8000000 * 0.8
          + x.doubleValue();
          raly2 = wforce.doubleValue() * Math.sin(aldir) * 0.8;
  
          alx2 = domainAxis.valueToJava2D(ralx2, plotArea, domainAxisLocation);
          aly2 = rangeAxis.valueToJava2D(raly2, plotArea, rangeAxisLocation);
  
          line = new Line2D.Double(alx2, aly2, ax2, ay2);
          g2.draw(line);
  
          double ardir = Math.toRadians(windDir.doubleValue()
                  * (-30.0) - 90.0 + 5.0);
          rarx2 = wforce.doubleValue() * Math.cos(ardir) * 8000000 * 0.8
                  + x.doubleValue();
          rary2 = wforce.doubleValue() * Math.sin(ardir) * 0.8;
  
          arx2 = domainAxis.valueToJava2D(rarx2, plotArea, domainAxisLocation);
          ary2 = rangeAxis.valueToJava2D(rary2, plotArea, rangeAxisLocation);
  
          line = new Line2D.Double(arx2, ary2, ax2, ay2);
          g2.draw(line);
  
      }
  
      /**
       * Returns a clone of the renderer.
       *
       * @return A clone.
       *
       * @throws CloneNotSupportedException  if the renderer cannot be cloned.
       */
      @Override
      public Object clone() throws CloneNotSupportedException {
          return super.clone();
      }
  
  }
  